Prime_Evil
Emperor Mongoose
RangerDan said:Historically, even peasants could scrape by enough coin to wear some kind of helmet to battle (even if it was only a pot!). Give the enemy NPCs helmets and see how long your players keep up headshots.
This point is worth emphasizing. People aren't stupid. Even if they can't afford any other armour, they will still invest in a helmet because they know that being injured in the head can be deadly!
If your characters are always targeting the head, it's because their opponents aren't taking sensible precautions against the most dangerous type of injury in combat. Although not everyone will wear a helmet, most people who are expecting trouble will do so.